Sewing-machine for sewing overall-straps.



yr sra'rasra'rntir raro.

FRED ERNEST WIGGINS, F MALDEN, MASSACHUSETTS, V.ASSIGNOR TO LUCIUS N.

" LITTAUER, 0F GLOVERSVILLE, NEW YORK.

SEWING-MACHINE FOR SEWING OVERALL-STRAPS.

i l TO aZZfww/m it mayiconcern:

ing-Machines for Sewing Overall-Straps, of

' which the following is a specification.

This invention relates to sewing machines, the object thereof being to provide a simple andi effective means for forming tapered suspender straps used in the manufacture of overalls, in which the edges are folded throughout their length and a rein-forced lining piece stitched within the folds at one end thereof.

I-Ieretofore straps of this kind were made on a single needle machine, first folding one edge of the strap and stitching it with the lining in place, then folding the opposite edge and completing the stitching, with the result that the straps were never uniform at the tapered portion, while the operation was slow and expensive. By means of the present improvement, however, the formation of these straps is very much simplified.

In the drawings accompanying and forming part of this specification, Figure -11 is a' view of so much of a sewing machine as is necessary to illustrate my invention; Fig.

2.1is a top plan partly sectional View showing the presser foot and folder for forming and feeding the straps. Fig. 3 is a perspective view of an arched presser foot; Fig. 4 is a detail bottom view of the folded strap, with one edge partly fiattened out to show the reinforced piece; Fig. 5 is a sectional View taken 0n line 5-5, Fig. 4, looking in the direction of the arrows; land Fig. 6 is a sectional view taken on line 6-6, Fig. 4, looking in the direction of the arrows.

Similar characters of reference indicate corresponding parts in the several figures of the drawings. f

The sewing machine a cloth plate 1, a looper shaft 2 carrying loopers 3, which nay be of any of the well known kind used for single or double chain-stitc bearing 4 of the head carries a needle bar 5 provided with a needle holder 6 and needles ,7L ,A presser bar-Sis also supported in the vhead and operates in the usual manner, it

having a presser foot shank 9 secured thereto by a screw 10. This presser foot shank 49 specification of Letters Patent. applicati@ mea March 22, i917. semi No. 156,571.

The upper Patented Oct. 9, 1917.

has pivotally secured thereto by means of a screw 11, a yoke l2, which is of arch form as at 13 and has a pair of depending portions 14, each carrying a presser foot 15 pivotally secured thereto as at 16 for rocking 'movement. `Each presser foot is provided with needle hole 17 for the passage of the needle 7. These presser feet coperate with suitable feeding mechanism (not shown) which may be arranged to correspond with the feeding movement of the presser feet. Se-

cured to the cloth plate by a bracket 20 and screws 21 is a folder 19'. This folder is of arch form and comprises -a body having spaced apart scrolls formed by bending the lower spaced edges of the body upwardly and loutwardly as at 24, and these bent edges of the body taper toward the delivery end of the folder. Secured on top of these bent portions 24 is a center piece or plate 22, having its edges curled as at 23 and terminating in the upwardly and outwardly bent portions 24 of the folder body. The body is also provided with' extending` overhanging portions 26 overhanging'- the center piece or plate 22 and spaced apart to forni a slot or open space 27 from end to end of the folder, and forming the guiding channels 25 for the'edges on the 'center plate 22, with thel reinforcing lining 29 underneath. The end' 30 ofthese two pieces may be folded under if Adesired to give a finished end. The strip 28 and lining 29 are then forced through the folder so that the outer edges of the strip pass downward into the channels 25 and into the scrolls 24, which turn the edges thereof as it is fed up to the stitching position. The object of the open slot 27 'is the strip ysufficiently forward so that thc presser feet and feeds will grasp the same and start it through the machine. The delivery end of the folder is made the width of the .finished narrow end of the strap and the spacing of the needles is also arranged to suit so that as the wider portions of the strip are fed through the folder. 4the center strip. This open space 27 'from end to end of the folder permits the to enable thel operator to feedfemm xviii eetb imweie nite me' of Ehe ,e hieugh zhe burned f'giiie el reins of nie- .,iweid ie the leasen yekefi pi'esser foot wiii be seen that ifi ies it is mei-ely nece,

im 'the epeisznbeete piace 'the lining e, ehe ne? eV d elf the strep, feld die folder, ene strip reducing what has.'

e im* forming," sei-eque, the een'ibinzition ci pifeesei feet. eiilpgiioiting mese? eevb Secured theretal suspc ef etch forme member, a peil of t@ :i folder having the delivery e116. thei'eo'f edjeceiit te bhe prees-r feet and comprising e, eecly having e pail' e spaced apeit edges ef'f. e liep eild pi i i? epeit scrolls belen said tcp i eeeiieeted by e plete. 9- The combiiim mi desei`be in cieim. l, iii 'which i Gered toward 7he eeiivery ered 3 ed between ehe felder.,

- ,scribed in claim 1.9 ieipei'ed toward che fief elle. Ehe plete is Je feecsfifee' ii claims i. Y piefe is iewieci subemeiep and bei'iem ibnetion fessier 'iig seid i' buckling, eeueiy the 'two ci: iii e, iii e eoigibiii e tion pair ei piaf-esser 9. Efe e sewing iiizzciine, ehe cemoiififiien @i for buckling e, strip passing te the Stine-hing iiiechmnism, means ier mining seth ec s ei' ie egi'ip around the edges of :i ieieieieuie' Suap, and ineens ier Stitching of :i e le and. permit the ef buck ed eiiipiiie peitiei ef meteiiei.

e e sewing machine, the Combination ef folding iueehenisiii effec-tive te buckle emi eiiiiuitfziieeusiy tuiii and stitch vbo'h edges @if e e p mid effect ehe buckling of .the emi-ilus peition the etiip, end means foi* beh eck of he Simili-- 'tzmeeuei The eembiiieieii deseifefi iii daim 12, Lol i' wii'm. pi'eeeer ieee mechanism.

copei'aing Awith said ifodci mechanism il@ pei'iiiit the pasea/ige ei vdie sui'pliie materiel.

The cembinetieii desci'ibed iii Claims sind i3, iii which die presse? fee@ mecha,- nisni e prises e pe' of spaced. epei presser ieee @ed i` mech-ine, Epi e eembiiiefeieii i and pifeeeei fem meehau'ziem, n ifeiiin ieeciie' ism eeiiipiising eeepering toward ite :vi eich-ici f. ci emi iiev. its upper edges;

en eeii-fei-me supporting; y

which the connecting means is in the form' of a plate.

28. The folder described in claims 21 and 22, in which the plate extends over the top of the scrolls ofl said members and coper ates therewith to form the scroll.

24. rhe folder described in claim 2l in combination With stitching mechanism and presser foot mechanism including a pair of presser feet spaced apart to correspond to the width ofthe Work passage at the delivery end of the folder.

25. The combination described in claims 2l and 24, in which tl ie spaced apart presser feet are carried. by a yoke shaped supportpivotally connected.

26. In a sewing machine, the combination of means for buckling a strip passing to the stitching mechanism without retarding or interfering with the feed movement of the strip as it passes to the stitching mechanism and comprising an archformed folder having its upper edges unbridged, and spaced apart from end to end of the folder, means for turning the edges of the strip, means for stitching the so turned edges of the strip.

Signed at Boston, county of Suffolk, and State of Massachusetts, this `14th day of March, one thousand nine hundred and seventeen.

. FRED ERNEST lVIGGINS. Witnessed by- WM. T, BOWLING, WM, E. STEVENS.

and 

